Reference : Spectroscopic anatomy of a meteor with the very large telescope (ESO)
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Spectroscopic anatomy of a meteor with the very large telescope (ESO)
Jehin, Emmanuel mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image]
Jenniskens, P. [The SETI Institute, 2035 Landings Drive, Mountain View, CA 94043, USA]
Cabanac, R. A. [Canada-France Hawaii Telescope (CFHT), Kamuela, HI 96743, USA]
Laux, C. O. [Ecole Centrale Paris, Laboratoire EM2C, 92290 Chatenay-Malabry, France]
Boyd, I. D. [Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109-2140, USA]
Advances in Space Research
Pergamon Press
Yes (verified by ORBi)
United Kingdom
[en] A meteor spectrum was recorded serendipitously with the ESO Very Large Telescope during a long exposure in long-slit spectroscopic mode with the instrument FORS1. The -8 magnitude fireball crossed the narrow (1 arcsec × 7 arcmin) slit during the observation of a high z supernova in normal service mode operation on May 12, 2002. The spectrum covers the range of 637 1050 nm, where the meteor’s air plasma emissions from N[SUB]2[/SUB], N and O dominate. The meteor trail appears moreover resolved along the slit but we conclude that this is because the meteor at 100 km altitude was out of focus for the VLT. The plasma excitation temperature varies only from about 4300 to 4365 K across the trail, based on the ratio of atomic and molecular nitrogen emissions. This is in agreement with the fact that the trail is not actually spatially resolved. Finally, carbon atom emission is not detected in the relatively unexplored range above 900 nm.

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